Android :: Preventing Functions From Being Stripped From Static Library

Aug 23, 2010

I have a static library, Foo, that is used by a shared library, Bar. Bar is the native shared library loaded by my Android app. Foo contains JNI functions that are only called by Java code and not by any C++ code in Bar. Because of this, those JNI functions get stripped out of the static library (Foo) when the shared library (Bar) is built. I'm currently using a slightly hacky method to prevent that from happening.So, in this case, is there a way to tell the compiler to not strip the JNI (or any) functions out when linking?

Android :: Preventing functions from being stripped from static library


Android :: How Do I Prevent Certain Functions From Getting Stripped?

Aug 29, 2010

I have a static library that contains some JNICALL functions, i.e. they are expected to be called from the JVM and are never referenced by the shared library that links the static library. However, it seems like function stripping is exterminating the JNICALL function (it's not visible in arm-eabi-objdump -t). I'm working around it by adding a dummy function with an impossible condition that calls the JNICALL function, but that's dirty. I know that there is a link option to prevent certain modules from getting their unused data stripped, but what is it? And how do I specify that option in the .mk file? I didn't see anything immediately obvious in arm-eabi-ld. Incidentally, the function stripping doesn't strip out JNICALL functions in the shared library itself, but it will remove those from the static library that the shared library is linking. What's the reason for that?

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Android :: Pitfalls When Using Static Functions?

Sep 30, 2010

I use in the getView()-Method of this example a static function to download the source of an ImageView. Later there will be threading included. However, I like to know in general how save the use of static function is in this case.

Because I experienced, that in some cases (when I scroll really fast) the Images get mixed up.code...

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Android :: Can Static Library Created By 2.0 Work At 2.1?

Mar 8, 2010

I create one static library(alogrithm.a) by using android 2.0. Now I want to use this library to work at android 2.1. Can I rebuild source code to create at android 2.1? Or directly use this library binary file by creating android 2.0?

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Android :: How To Compile Droid App With Static Library

Apr 2, 2009

How to compile android app with static library?could somebody give me a example?

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Android :: Droid-ndk : Difference Between Static And Shared Library?

Jul 9, 2010

I'm new to Android ndk and i didn't understand yet which are the differences between static and shared library. Could you explain me what these differences are? When developing a library how could i choose one of them?

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Android :: Developing C++ Static Library For Use With Java On Droid / Start It?

Apr 27, 2010

I have an existing C++ library that I want to compile into a static library, and call commands from it with Java on the Android platform. I am brand new to Android development, and just need to figure out how to set the Java interface up so my C++ lib works on the Android. Where do I start?

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Android :: Compile Static Library Using Droid NDK / Getting Error - Get It To Work?

May 31, 2010

I'm trying to compile a static library to use on Android but I can't figure out how to compile it. The library uses standard libraries (stdio.h etc...) and libxml2.

I am trying to compile using arm-eabi-gcc but I get the following error:

/cygdrive/c/android-ndk-r4/build/platforms/android-8/arch-x86/usr/include/asm/posix_types.h:15:28: error: posix_types_64.h: No such file or directory

How do I get this to work?

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Android : How To Create Executable File With Linking Static Library

Feb 4, 2010

I have a static library: libhello.a and I want to create a executable file that link with this static library:Code...

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NoClassDefFoundError For Static Inner Class In Library Jar

Dec 9, 2013

I have a thread on StackOverflow (titled: NoClassDefFoundError for Jersey 2.4.1 client in Android) but I thought I would reach out here in hope of getting a more specific/targeted audience group.I have followed instructions from other posts about the libs Android dependency fix but I still get the issue.

I am using Eclipse Juno, with an Android App targeting API 17. Basically I am getting a NoClassDefFoundError at runtime for the org. glassfish. jersey. model.internal.CommonConfig$1 class located in jersey-client-2.4.1.jar. This is when I just do a Run As... deploy from within Eclipse and it fails when I instantiate the CommonConfig class or one that depends on it internally. The start up log is given below:

[HIGH]12-10 12:25:20.657: I/dalvikvm(10170): Failed resolving Lorg/glassfish/jersey/model/internal/CommonConfig$1; interface 920 'Lcom/google/common/base/Function;'
12-10 12:25:20.657: W/dalvikvm(10170): Link of class 'Lorg/glassfish/jersey/model/internal/CommonConfig$1;' failed
12-10 12:25:20.657: E/dalvikvm(10170): Could not find class 'org.glassfish.jersey.model.internal.CommonConfig$ 1', referenced from method
[code]....

It doesn't seem to find a static inner class of CommonConfig. In the SO forum I tinkered with some options in ProGuard but I've come to learn that this isn't even used in the standard debug mode, only when you do a release build (Export from Eclipse). It would appear that something is happening with the class but I can't figure out why it would not be included if its parent is. Is there some kind of 'light' ProGuard process that goes on when a debug deploy is done? how to resolve this particular case of NoClassDefFoundError?

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Android :: Create Executable Static Library In Droid / Connect It In Eclipse?

Feb 19, 2010

I ask something about static library..

" how to create executable static library in android?"

and

"How to connect static library in eclipse?"

Static library is a binary file, How to understand static library in jni?

I wondering static library operation method in android.. (such as static library in vc++).

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Android :: Make Droid Library For Static Linking That Includes Resources?

Mar 7, 2010

I am successfully linking some of my code stored in a .jar-based library to my Android app. The .jar code references Android library content just fine.

The problem is I need to include 'res' resources in the library but can't work out how to do this. Any suggestions?

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Android :: Call Non Static Method In Static SQLiteDatabase Class

Mar 30, 2010

i want to display a msg to the user (msg box or Toast) when exception happend in a static SQLite Database class that i use. the problem is that i cant call a non static method in a static class , how can i handle this. this is the class

private static SQLiteDatabase getDatabase(Context aContext) {

and i want to add something like this in the class when exception happen but context generates the problem of reference to non static in static class.

Context context = getApplicationContext();
CharSequence text = "Hello toast!";
int duration = Toast.LENGTH_SHORT;
Toast toast = Toast.makeText(context, text, duration);
toast.show();

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Android :: Cannot Make Static Reference To Anon-static Method

Feb 7, 2010

I'm having some issues with the old "Cannot make a static reference to a non-static method" error in my Android program. I am creating a sand falling game (similar to the Powder Game) and I created a class called Control to create a Control Bar at the bottom of the screen with a slider for brush size (that works fine) and a button to pop up a Dialog to allow users to pick the selected element. However, when I call DemoActivity.showDialog(2) from my code, it gives the static reference to non-static error (DemoActivity is the main activity of my application). I also tried changing it to just Activity.showDialog(2), but I got exactly the same error!

Here's my code:

CODE:................

I fixed it by adding the following to my Control.java code:

CODE:..........

And then calling control.setActivity(this); from my onResume section of DemoActivity.java!

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HTC Incredible :: Bluetooth Stack Stripped Of SPP

May 12, 2010

Has anyone been able to successfully use a SPP Bluetooth device with their Incredible?I have been trying to connect a QStarz BT-Q890 Bluetooth GPS unit to my HTC Incredible. The BT-Q890 uses the Bluetooth protocol SPP (Serial Port Profile I think) to communicate. There is some indication that SPP support has been removed from the Bluetooth stack by HTC/Sense.While the BT-Q890 pairs with my phone, I cannot get the "Bluetooth GPS" app from Googoo or the "Bluetooth GPS Service" app from Trackaroo to communicate with the device. Both apps fail to establish a connection to the BT GPS, and sometimes even hang my phone and cause a phone reboot!I have tested my BT-Q890 with a Motorola Droid and the connection was fine. I also tried it with a second Incredible, and received the same failures.Help!

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Android :: Non-static Method Cannot Be Referenced From A Static Context

May 26, 2010

I am modifying the source code here: http://thinkandroid.wordpress.com/2009/12/30/getting-response-body-of-httpresponse/

I get this error:

code:.............

This error is line 13 on the second box.

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Replace Single Row View In Custom STATIC ListView - STATIC Data

Mar 18, 2013

I have Eclipse Juno and I'm working on an app with that.

The main activity will have a scrollable menu that takes you to all the other activities.

So the general structure/outline right now:[HIGH]Relative Layout ImageView (header logo type thing) ListView (the actual scrollable menu)[/HIGH]Here's the problem though... I can't find any simple list tutorials. I can easily make a single line list work but I need to make a two line list and one that is static, not dynamic and no examples are out there for that. It's like if you want to make a 2 line list, you can only learn how to do it in the most code-heavy ridiculous way possible.

Essentially what I am looking for with the list is this: Item one: Centred, bold, non selectable title (Resources)

- Item two-??: two line list items, click-able to a new activity, title of the section on first line, description on the second line.

- Item ??: Centred, bold, non selectable title (Tools)

- Item ??-??: two line list items, click-able to a new activity, title of the section on first line, description on the second line.

Nothing dynamic that is ever going to change, no super complex wonkey calculations, just to simply have the data set in stone (preferably via XML) and to call it into the list.

I experimented with some of the other list views and no matter what I did, I could get, via editing the resources and NOT using Java, more that one item on a single line but it wouldn't format it properly according to the layout I guess because I haven't got the ID correct or whatever I don't know.

I mean, all the examples I've seen for a 2 line list are extraordinarily over-coded and just bloated. I mean I have a website I am still working on in C#/ASP.net that has far more complex things in it with half the code that I've seen for the examples of the two line lists.

I tried on my own to figure it out (I am decent with C# and vaguely familiar with Java, self taught, and programming for some other systems like Python, again all self-taught), but like ALL coding references, they're organised by the actual code you implement (that you don't know) instead of by what you want it to do (so you have to search the whole code base to find something that you don't know what it's called but know what it does). >:C

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Android :: Static Vs Non-static Inner Classes

Mar 9, 2009

I have been finding it convenient to extend Handler in many of my activities to handle messages specific to the activity. The handler sublass is an inner class of the activity and needs to access its state. I am wondering if there is any performance difference between making the handler subclass static and passing in the activity explicitly in its constructor or making the subclass an "instance class" and letting the vm worry about my accessing members of the containing activity.

The static approach:

CODE:.............................

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Android :: Store Values In SharedPreferences In Library Code / Have It To Projects That Include Library?

Nov 11, 2010

I have an Android library project that makes calls to PreferencesManager.getDefaultSharedPreferences.

I have 2 version of my app, paid/free, and they are not able to access the preferences stored by the library code.

Can someone tell me the right way to store values in SharedPreferences in library code and have the values available to projects that include the library?

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Android :: Self-contained Test Library Project Cannot Find Library Classes

Aug 17, 2010

According to this SDK guide, unit-testing a Library project can be achieved by creating a standard application project, reference the Library project and then instrument the application for unit testing. However, when I do this and launch the test application I get the message.No tests found with test runner 'JUnit 3".I'm using Eclipse and the Android ADT plugin, all latest versions.the projects compile just fine. The test project also installs fine to the emulator. But in the console I can see that it looks for <library>.apk, which of course doesn't exist since I'm compiling this as a library into the test project.

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Android :: Load Native Library Which Depends On Third Shared Library

Aug 26, 2009

I created a jni library which depends the third shared library, I must copy the third shared library to /system/lib, otherwise, Java application can't load jni library. But you know, on G1 with official OS image, /system/lib is readonly. I tried to call System.setProperty to set java.library.path to the location stored the thired shared library before load jni library, but the issue still exists.

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Android :: Differences Between Jar Library And Library Project

Jul 15, 2010

As I understand, the three ways of distributing my application are via Jar, Android Library and Android Library Project.Jar - cannot contain resources or XML layouts (so this is out for me)Android Library - I don't really know how this works but the Google API uses it..Android Library Project - includes resources but allows the client free rein on the code as it is distributed as source.If I am to create a closed source application that requires drawables and XML files that I want to distribute to other Android programmers, what should I use? And can someone direct me to a tutorial on creating an Android Library?

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Android :: Static Method In Java Accept Only Final Or Non Final Variables Within Its Method - But Not Static

Sep 15, 2010

Why should a static method in java accept only final or non final variables within its method, but not static?

For example I have the following method:

CODE:.................

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Android :: Preventing Accidental Dial Out Calls

Nov 19, 2008

what apps are you guys using to dial or speed dial. i am having a problem as if i use the log or dialer and when done with the call i have a tendendcy to accidently hit the screen and place a call unknowingly...at least untill my wife calls back about the conversation she overheard

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Android : Preventing WakeLock Under-Locked Exception

Feb 4, 2010

I'm trying to implement a times WakeLock in my Application, so this is not a Service.

I want the wakelock to simply prevent screen dimming for 3 min. Looking through the docs, this seems simple enough, but I seem to randomly encounter a Under-Locked exception that I cannot pinpoint.

Here is my WakeLock-related code:

in onCreate: PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE); mWakeLock = pm.newWakeLock(PowerManager.SCREEN_BRIGHT_WAKE_LOCK, TAG); // Adjust time to include user's setting int timeout = WAKELOCK_TIME - Settings.System.getInt(getContentResolver(), SCREEN_OFF_TIMEOUT, 0); if (timeout > 0) {mWakeLock.acquire(timeout);} ...

in onDestroy: if (mWakeLock != null && mWakeLock.isHeld() == true) { try { As you can see, I wrap the release and try to only execute it when necessary as a clean up only. I'm assuming that since I'm aquiring with a timeout, the PowerManager will handle the release in most cases when the timeout expires.

I don't have a copy of the logcat at the moment, but what seems to happen is I get the Under-Locked exception randomly, and at random times (it's not always when WAKELOCK_TIME elapses). The strange thing is that the exception does not point to my code - all the entries point to "internal" Android code.

It's hard to find examples of other people using aquire with timeouts. Any ideas what I could be doing wrong here?

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Android : Preventing Application - Want Screen - CPU Timeout

Jun 13, 2009

I have an Android (1.5) application which needs to be constantly running when a button is pressed. So, when a button is pressed I would like the phone to remain on and not want the screen or CPU to time-out.

When another button is pressed I would like the phone to be back to normal and time-out as per user settings.

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Android :: Preventing Long Press To Save Images

Aug 13, 2010

I've written a web-app in HTML and Javascript for iPhone and Android which involves the dragging and dropping images.You initiate the drag by holding your finger over the image for about a second. However, Android then pops up the message giving me the option to save the image, set it as wallpaper etc.How can I prevent Android from doing this? Is there a metatag I can use? Some javascript?

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Android : Preventing Screen Timeout In Google Listen?

Feb 22, 2010

I have a Nexus One and while using Google Listen to listen to podcasts my screen lock will go into effect. Unfortunately, when this happens, the podcast audio pauses. I can set the screen timeout to a maximum of 30 minutes but some of the podcasts are longer than that.

Is there anyway to have Listen suspend the screen timeout while it is running?

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Android : Preventing Orientation Change During Video Playback

Apr 26, 2010

I am workin on a video player app in which I want only the landscape orientation active coz right now when the user tilts the phone during video runtime, it restarts playback in that orientation.

How can I easily avoid this?

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Android :: Preventing Dialog Auto-Dismiss On Button Click

Mar 20, 2010

Is there any way (the best way) to avoid this happening? I am using a ProgressDialog which has one cancel button. On clicking the cancel button I want to disable the cancel button and change the message to "Canceling...". That bit's easy. Only once the cancellation has been fully processed do I want to dismiss the dialog. The only way I can think of is to use a custom layout but I would rather keep the default dialog look and feel (rather than trying to simulate it with my own code).

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